Concrete-reinforcing means.



y E. sMuLsKl. CONCRETE REINFORCING MEANS.

Y APPLICATION'EILED APR. 3. :916. lg l Patented Novo 6, 1917.

2 SHEETS-SHEET l.

E. SIVIULSKI.

CONCRETE REINFoRmNG MEANS.

APPLICATION HLED APR.3. 1916.

atented NovE 6, 1917.

liili* i l 'l MTF@ U ci la nait/f @aLl-trinit? EDWRB SVIULSKI, OF BROOKLINE, ll/SSCHUSETTS.

CON'CRETE-RENFORCNG TEEJNS.

jggiiggy Specification et Letters Eatent.

Appiicanon ined apra s, 191e. semi no. sassi. A

T ZZqpiwmimog/concern.' a point adjacent the upper surface of the Be it known that l, Enwiinn Sirciisiii, a slab down and is embedded in a depending citizen ot the United States. and a resident rib ll (Fig. 2) ot' the slab. of Brookline, tlassacliusetts, have invented fteferring no more particularly to Figs. 60 i an linprovenient in Concretelteinforcing 3 to T inclusive, the reinforcing beain there Means, of which the following description, shown comprises a flange l?) for resisting in connection with the accompanying drawtension stresses in the concrete. a web l5 ings. is a specification. like characters on for resisting shearing stresses therein, and

the drawings representing like parts. a head or flange 17 for resisting compression "i5 .3 This invention relates to means for reinstresses therein. v

forcing concrete and the like. and among The compression reinforcing flange is other objects provides a reinforcing` beain relatively small as compared with the teiifor interlocking engagement: with the consion reinforcing flange. ln fact, the former crete to produce effective reinforcement may be merely slightly wider than the therefor with economy of material. thickness of the web of the beain. To en- The character of the invention niay be able this reduction in the size of the aforebest understood by reference to the followsaid flange, means is provided for locking ing description of an embodiment illustrator anchoring the saine to the concrete typiing the invention shown in the accoiiipanyfied herein as a series of elements or proing drawings, whereiii,- jections 19 extending in chill-and-vallej"7 Figure l is a plan view of a concrete slab form along the top of the flange, and series equii'iped with a reinforcing beain illust atof lateral projections 2l at the edges ofthe ing the invention; flange in staggered relation opposite grooves Fig. Q is vertical section talle-n on line 23. The lateral projections thus formed do 30 25 of Fig; l; not detract from the strength of the beain.`

Fig. 3 on an enlarged scale is a vertica The anchoring elements preferably are section through a portion of the slab and distributed substantially throughout the a beam shown in Figs. l and 2; length of the flange, and thereby provide l i5 a side elevation of a portion of an interlocking of the Vflange with the con- 85 :is ih@ 10mm; crete at points distributed substantially Fig. 5 is a vertical section through the throughout the length of the beain adjacent beam; the upper surface of the slab where the Fig. 6 is a plan view of a portion of the concrete experiences compression stresses. beam; Thus the concrete and beam will effectively 35 `Fig. 'l' is a -vieiv showing the bottoni of resist these stresses and flexion of the beain.

the tension reinforcing flange of the beani. The portion of the slab adjacent the lower Referring to the drawings, l designates surface thereof between columns is subjecta concrete slab, the tei-iii being used in a ed to tension stresses. Concrete, however, is broad or comprehensive sense, supported by weak in resisting such stresses. Similarly, 5&9 suitable columns which may be in the the portion of the concrete beain 11 adjacent forni of -beanis embedded' in concrete. A the lower surface thereof, experiences tenpair of said columns 3 may be connected sion stresses and is Weak in resisting suchby a reinforcing beain 5, and an adjacent stresses. Therefore, to strengthen the slab pair of the columns may be connected by a and the concrete beam, or either of them, 10C "i5 similar reinforcing beani Said reiiiforcagainst tension stresses, the flange 13 of the ing beams in turn may ybe connected by beam may be made large and of a Width very similar reinforcing side beams T and a beain substantially greater than the flange 17.

il extending across the slab centrally between To interlock or anchor the flange 13 with said beams '7. the concrete, it may have anchoring elements m5 59 To further reinforce the slab, tension rods or projectionsv distributed along the saine. j

l0 may be provided extending across the As shown herein, the flange is provided withV tops of the beams and bent downward to series of edge projectionsl in staggered present portions between said beams adjarelation and alternating with grooves 2T cent the lower surface of the slab. i Without loss of material and strength. The il@ 55 Each of the beams 5, 7 and 9 in the presouter face of the flange may have a series ent instance of the invention oro'ects from of' rooves or channels eXtendin lonUitndi- 

